201871982 has 16 divisors (see below), whose sum is σ = 326389392. Its totient is φ = 93089280.

The previous prime is 201871951. The next prime is 201871993. The reversal of 201871982 is 289178102.

201871982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34382 + ... + 39822.

It is an arithmetic number, because the mean of its divisors is an integer number (20399337).

Almost surely, 2^201871982 is an apocalyptic number.

201871982 is a deficient number, since it is larger than the sum of its proper divisors (124517410).

201871982 is a wasteful number, since it uses less digits than its factorization.

201871982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 201871982 is about 14208.1660322506. The cubic root of 201871982 is about 586.6224539827.

The spelling of 201871982 in words is "two hundred one million, eight hundred seventy-one thousand, nine hundred eighty-two".